Centrifugal machine for separating solid substances from liquids.



' G.JAHN.

CENTRIFUGAL MACHINE FOR SBPARATING SOLID SUBSTANCES FROM LIQUIDS.

' APPLICATION FILED APR. 23 x914.

2 SHEETSSHEET 1.

1,124,907. r I Patented Ja11.12,1915.

JAHN. CENTRIFUGAL MACHINE FOR SEPARATING SOLID SUBSTANCES PROM LIQU IDS.

APPLICATION FILED APR.'23, 1914.

' Patented Jan. 12, 1915.

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To all whom it may concern Be a known that. I, Gnonc Jim, civil engineer, a subject of the German Emperor,, in the Kingdom? and resident of Arnswalde, I of Prussia, Germany, Bahnhofstrasse 12, have invented new and useful Improvements in or Relating to Centriiugal, Machines for Separating Solid Substances from-Liquids, of which the following is a specification.

This invention relates to a centrifugal machine of the known vkind in which the ma-' terial, such as for instance clay-slime, starch+ milk or. the like, is introduced into a quicklyrotatin drum, the solid particles being projected .y the'actitni" oi centrifugal force,-

toward those portions of thedrum where the speed is the greatest, and settling at the said portions. 9

In the 'apparataisf-hitherto known; the solid substancesaratonveyed from-the zone of the lead back through the density formed in.

' stirring of the liquid-contained in thedrum is completely avoided. Moreover, the liquid masses carried away by the transport or conveyer device, are brought back again at a point where the liquid is the thickest, so disturbance of A machine of the in the accompanying drawing in which- Figure 1 is a vertical section. "Fig. 2 shows a portion of a slightly modified construction, and 3 shows'in section an-' other construction according to this inven:

tion. V p

On the rotating spindle A ported in the machine frame,

centrifugal. drum B.

is secured the The drum st ede at its outer Set-- tling zone-,1 prnear the same, at C, with conveyer pipes 4 Specification of Letters ream. Application filed April 23, 1914. Serial No. 838,972.

a stirring action on the I new kind is illustrated suitably supdriving pulley K will same speed-as the centrifugal drum B. In

D for the heavier solid mate- Patented Jan. 1-2, 19fl5;

rials. The conveyer drum, as they are secured-to the latter.

. In the conveyer pipes are arranged worms which are separately driven from the center of the spindle by means of wheel gear I or chain gear etc. These driving parts F participate in the rotation of the centrifugal drum, and have also a separate speed, so that the worms E are rotated in t e conveyer pipes in order to bring about movement of the material. Some other me chamcal conveyor devices, such as elevators etp), could also be used in place ofthe worms E and mechanical conveying could pipes D rotate with the also bey-i'eplscedby suction or pressure ac- 'tion,-,conveyer. pipes D engaging with the outermost settling" pipe, or near the same, at

beingutilized tor the purpose. Theliqinds separated escape at G around the wholee ircumference of the drum. The liquids tobe separated are introduced into the drum B from the inside, for instance at H, to the level a-b. The conveyer pipes -'are.of such construction that hollow branches J which connect the conveyer pipes D to; the

drum B, enable any liquid carried away into the conveyer pipesD to flow back into the drum B to. the liquid level w--b. The

heaviersolid-materials are accordingly still ur h r ileprived of the liquid by means of the branchesv J. Y

In order to enable the worms E or other mechanical eonveyer devices to be stoppedand started again when the drum is rotating at full speed, the driviu pulley K is provided with a loose pulley or in place of the loose pulley L, between the driving pulley K and the spindle M is inserted for instance at M, an easily operated coupling or clutch.

The whole centrifugal drum is driven by a pulley O mounted on the spindle A or' a motor. In place of connected directly to device, an adthe clutch. or of the driving justabl e brake device could also be arranged on the spindle. The centrifugal machine can be made vertical or horizontal.

The working oi the machine is as The -centrifugal drum B is driven by means ot -tiiewpulley O or in. some othermariner. As the .conv'eyer pipes D rotate with the same, and also the driving mechanism F, the be driven with the.

order togive the, conveyer worins E, or other conveyor, mechanisms, a conveying follows: W 105 place movement in the conveyor pipes D, the driving pulley K' is rotated. If the worms D or other conveyor devices are temporarily not to make any conveying movement, the rotation of the pulley K is stopped, for instance by moving a belt from the pulley K to the loose pulley L, or by disconnecting an easily 0 erated clutch arranged at N. In such a clutch, could also be arranged a simple brake ullcy which can then be braked by a suitla le brake. It will 'be readil .understood.that in this construction if t e brake is released, the transport devices Emust stop, but that as soon as a braking effort is exercised, the transportdevices must rotate, according to the strength of the braking effort, with a speed increasing in pro rtion to the action of the brakes. The liqui s withthe heavy solid materials @pass for instance at H into the drum B, and

"a liquid level a-b is formed. The heavier particles settle in the outermost settling Keene; at C, the liquids escape at G from the drum B around the Whole circumference.

The solid particles are con yed at 0' through the conveyor pipes D either by means of worms or other mechanical conveying -devices or by suction or pressure devices, and escape from the conveyer pipes at P and are projected outwards Anyli uids carried away, can return to the rum through the hollow branches J. Owing to the latter, the solid materials are still 'furthe! deprived of the li uid. The wholc process of separation an conveying can take place in a continuous manner.

Fig. 2 shows on a reduced scale another construction of the device in which -the conveyer Worm is omitted. The carrying away of the solid materials from the plpes' D takes place through pipes R by means of which water under pressure. or compressed air or steam is introduced into the pipes D. The same effect could also be obtained by connecting the end of the pipe D to a chani: her, and connecting the latter in a suitable manner to a vacuum. The end of the pipe R which conveys pressure medium into the pipe -D, is preferably made in the shape of a nozzle.

In theconstruction shown in Fi 3, the liquid pressure is exclusively use in the drum for-the purpose of carrying the solid materials out of the'drum- In many cases, more particularly Where it is not of importance to get the materials from the centrifugal drumas dry as possible,;thecentrifugal pressure in the drum is sufiicient to force the heavier materials from the drum on the principle ofi communicating pipes.

The pipes D no longer have any conveying device,.it is true that a combination of these adjustable pipes with mechanical conveying devices could be used, but their free end is provided .vvithlan, adjustable teleaccording to the specific gravity of the liqu1d to lee-separated being different from the specific gravity of the solid materials,

the pipes must be lengthened or shortened.

If for instance the pipe T is pulled out to such an extent that the outlet openings are situated on the same cylindrical surface as the level of the liquid in the centrifugal drum, then' nothing will be able to issue from the end of the pipes. If however the pipes are shortened, so that their openings aresituated on a cylindrical surface of a larger diameter than that corresponding to the liquid level formed by the liquid in the drum, the liquid must issue from the pipes T. As however the other end of the pipes in the drum is lying exactly in that portion in which the separation took place, onl solid materials will be driven out through the pipes, as they separate.

By correctlyadjusting the pipes T, it is possible to carry out the whole of the solid materials mixed with. only more or less liquid. The latter can be removed in any desired manner and it desired carried back.

It is advisable to be able to move all the telescopic pipes '1 simultaneously, and even during the working, in order to reach the exact position which gives the most 'favorable removal of the solid in terials. To th end, the telescopic pipes T are connected by suitable rods U to a sleeve V adjustable on the spindle A.; The sleeve V is provided with a circular groove with which engages a collar o. This collar is connected to the spindle WV, and the latter can be moved in the frame df the machine by means of a hand wheel or s )indle.

It will be see ily understood that, by correctly usingi the hand Wheel X, the telescopic pipes .T can be radially moved.

Having nhw particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that What I claim is 1. A centrifugal separator of the charac ter described comprising a rotary drum, open at one side and closed by a diaphragm at the opposite side, with openings in said diaphragm near the means for feeding the liquid into the open side of said drum, a series of conduits/inclined outwardiy from said drum and in" wardly toward the rotary axis thereof, a

series of telescopic outlet pipes carried by 7 said conduits, and means for simultaneously moving said outlet pipes while sald drum is in rotation, substantially as described.

eriphery thereof,

means? 2. A centrifugal separator of the character described comprising a rotary drum,

' conduits being inclined outwardly away from said drum, and inwardly toward the axis about which said drum rotates, substantially as described.

3. A centrifugal separator of the character described comprising a rotary drum, open at one side and closed by a diaphragm at the opposite side, with openings in said diaphragm near the periphery thereof, means for feeding the liquid into the open side of said drum, and a series of conduits connected to said openings in the diaphragm for conveying the exterior portions of the separating mass away from said drum, with means for positively controlling the flow of fluid through said conduits, substantially as described.

4. A centrifugal separator of the character described comprising a rotary drum, open at one side and closed by a diaphragm at the opposite side, with openings in said diaphragn near the periphery thereof, means for feeding the-liquid into the open side of said drum, and a series of conduits connected to said openings in the diaphragm for conveying the exterior portions of the separating mass away from said drum, said conduits being inclined outwardly away from said drum, and inwardly toward the axis about which said drum rotates, with means for positively controllingthe flow of fluid through said conduits, substantially as described.

5. A centrifugal separator of the charac- I ter described comprising a rotary drum in the form of a hollow truncated cone open at its apex and closed by a diaphragm at the opposite side, with openings in said diaphragm near the periphery thereof, means for feeding the liquid into the open, side of said drum, a series of conduits connected'to said openings in the diaphragm for conveying the exterior portions of the separating mass away from said drum, the said con dui'ts being inclined outwardly from said drum and inwardly toward the rotary axis thereof, a series of telescopic outlet pipes carried by said conduits, a sleeve slidably mounted about the axis of said drum, and a series of connecting rods between said sleeye and said outlet pipes, with means for moving said sleeve and thus simultaneously moving all of said outlet pipes while said drum is in rotation, substantially as described.

6. A centrifugal separator of the character described comprising a rotary drum in the form of a hollow truncated cone open at its apex and closed by a diaphragm at the opposite side, with openings in said diaphragm nearthe periphery thereof, means for feeding the liquid into the open side of said drum, and a series of conduits connected to said openings in the diaphragm for conveying the exterior portions of the separating mass away from said drum, said conduits being inclined outwardly away from said drum, and inwardly toward the axis about which said drum rotates, substantially as described.

7. A centrifugal separator of the character described comprising a rotary drum in the form of a hollow truncated cone open at its apex and closed by a diaphragm at the opposite side, with openings in said dia-.

phragm near the periphery thereof, means for feeding the liquid into the open side of said drum, and a series of conduits connected to said openings in the diaphragm for conveying the exterior portions of the separating mass away from said drum, with means for positively controlling the flow of fluid through said conduits, substantiallyas described.

8. A centrifugal separator of the character described comprising a rotary drum in the formof a hollow truncated cone open at its apex and closed by a diaphragm at the opposite. side, with openings in saiddiaphragmnear the periphery thereof, means for feeding the liquid, into the open side of said drum, and a series of conduits connected to said openings in the diaphragm for conveying the exterior portions of the separating nass away from said drum, said conduits being inclined outwardly away from said drum, and inwardly toward the axis about which said drum rotates, with means for positively controlling the flow of fluid through said conduits, substantially as described.

In testimony that I claim the foregoing as my invention, I have signed my name 1n presence of two witnesses, this 14th day of April 1914.

, GEORG J AHN. Witnesses:

HENRY Hzisran, WOLDEMAR HAUET. 

